name: PCF2100 function: LCD DRIVER (40 SEGMENT) package: DIP,28 manufacturer: PHILIPS added-by: JASON GOHLKE comment: Data is loaded on High->Low CL transition. comment: When serial data bit 21 is HIGH, the A latches (BKPLN1) are loaded. comment: When bit 21 is LOW, B-latches (BKPLN2) are loaded. comment: Data bit 0 (first serial bit) must be zero. +--()--+ -> CL | 1 28| DLEN <- VDD | 2 27| DATA <- -> OSC | 3 26| BKPLN1 -> VSS | 4 25| BKPLN2 -> <- S20 | 5 24| S1 -> <- S19 | 6 23| S2 -> <- S18 | 7 22| S3 -> <- S17 | 8 21| S4 -> <- S16 | 9 20| S5 -> <- S15 |10 19| S6 -> <- S14 |11 18| S7 -> <- S13 |12 17| S8 -> <- S12 |13 16| S9 -> <- S11 |14 15| S10 -> +------+ This information was added by a third party and may be incorrect. This pinout came from the Chipdir: http://www.chipdir.org/